One of the main tools used by a trainer during the process of training is his own voice. It is thus essential that a trainer pays great attention to the health of his voice and his whole vocal apparatus.
Hot Drinks are Good
The most important thing a trainer can do to protect his voice is to have hot drinks once or twice throughout long training days. This helps relief the vocal apparatus and keep it functioning well during the training day. If having hot drinks during the training day was for some reason not possible then at least drinking plenty of water throughout the training day would be highly recommended. This helps keep the throat and the whole vocal apparatus well hydrated and lubricated. It is as if keeping the engine of a car running smoothly during long travels by making sure there is enough water for it to cool it down.
Cold Drinks are Bad
It is essential that the trainer never gets a cold drink right after the training session is over nor during the training day. This is like suddenly pouring cold water in an extremely hot glass thus resulting in its cracking and breaking. In extreme situations where the trainer does not have any hot drinks during training nor any water then gets cold drinks right after the long training session is over he might find his throat bleeding and himself spitting blood. I have learned this the hard way so try to guard against it by never ever consuming anything cold right after a long training session.
Do not Shout
Aside from keeping your body well hydrated with warm drinks, you also protect your voice by using it wisely during the training session. If there is a mic available, feel free to use it, particularly if you have many training sessions set up in a row during adjacent days. This helps save your voice way longer. Whether a mic is available or not, and whether you decide to use it or not, you should always attempt to maintain a balance between having all attendees hear you well and not shouting too loud in a way that harms your vocal apparatus on the long run. You should attempt to speak by pushing air out from the lower abdomen as if it is coming out of your stomach. This is similar to how singers train. It helps make your voice loud enough without straining your vocal apparatus.
During the training session you must also guard against shouting to trainees not only because this would be rude and generally inappropriate for the trainer to do but also because this single brief action may drain your vocal energy and strain it to the extent of causing temporary or partial damage to it.
A trainer who delivers training often, in particular if he does not use a mic, would find that his voice became loader. You can even get to know if a person you are meeting for the first time is a trainer/lecturer/public speaker or not from the strength and quality of his voice is.
The trainer’s voice is the #1 tool in the possession of the trainer. He must take great care in maintaining it, nourishing it and keeping it safe by hydrating it, lubricating it and keeping it warm as well as by not overusing it. A competent trainer would also make participants carry out a lot of activities and speak a lot during the training day thus drastically cutting down on the time during which the trainer himself is speaking.
In what other ways can a trainer help protect and maintain his voice?